Ross,

There is a big difference between the bends and nitrogen narcosis. (getting
'narc').

Normally one inhale air that is a mixture of oxygen, nitrogen, and other
minor gases. On land the nitrogen passes through your body without being
absorbed, and is exhaled.

When diving and under pressure, nitrogen dissolves and get absorbed into the
bloodstream. The longer you dive, the more nitrogen is absorbed. Now your
body needs time to get rid of this 'unnatural' dissolved gas.

Bends: If you ascend too fast, the nitrogen de-gas too quickly and bubbles
is formed in the bloodstream. This (very tiny) bubbles cannot pass through
all the vessels and get stuck, usually in places where they can cause
permanent paralysis. Pretty much like a stroke.

Nitrogen narcosis: The nitrogen that is absorbed has about the same effect
than alcohol. Most people get affected at around 30 m, but that is not a
rule. If affected, you cannot remember it afterwards. That is why there are
courses for every level of diving.

Diving is safe, as long as you stick to the rules. If you want diving
statistics, your local dive school may be able to help. Every accident
anywhere in the world is recorded, and investigated.

Regards, Kobie